| Abstrakt: |
Double resonance modulation (DRM) microwave spectroscopy has been used for the study of rotational spectra of normal and 3,4-d2maleic anhydride, and for the investigation of the iso topic species spectra due naturally occurring 13C-and 18O-species of the aforementioned two parent forms. From the experimental data the complete structures of the normal and the 3,4-d2-species were deduced independently to yield the following, averaged bond lengths (in Å) and angles (in degrees) for this planar, C2v-symmetrical molecule: |
